SSL_CONF_CTX_set_flags(3ssl)

SSL_CONF_CTX_set_flags3ssl

Set or clear ssl configuration context flags

Usage

 #include <openssl/ssl.h>
 unsigned int SSL_CONF_CTX_set_flags(SSL_CONF_CTX *cctx, unsigned int flags);
 unsigned int SSL_CONF_CTX_clear_flags(SSL_CONF_CTX *cctx, unsigned int flags);

Overview

The function SSL_CONF_CTX_set_flags() sets flags in the context cctx.

The function SSL_CONF_CTX_clear_flags() clears flags in the context cctx.

Notes

The flags set affect how subsequent calls to SSL_CONF_cmd() or SSL_CONF_argv() behave.

Currently the following flags values are recognised:

SSL_CONF_FLAG_CMDLINE, SSL_CONF_FLAG_FILE

recognise options intended for command line or configuration file use. At least one of these flags must be set.

SSL_CONF_FLAG_CLIENT, SSL_CONF_FLAG_SERVER

recognise options intended for use in SSL/TLS clients or servers. One or both of these flags must be set.

SSL_CONF_FLAG_CERTIFICATE

recognise certificate and private key options.

SSL_CONF_FLAG_REQUIRE_PRIVATE

If this option is set then if a private key is not specified for a certificate it will attempt to load a private key from the certificate file when SSL_CONF_CTX_finish() is called. If a key cannot be loaded from the certificate file an error occurs.

SSL_CONF_FLAG_SHOW_ERRORS

indicate errors relating to unrecognised options or missing arguments in the error queue. If this option isn't set such errors are only reflected in the return values of SSL_CONF_set_cmd() or SSL_CONF_set_argv()

Return values

SSL_CONF_CTX_set_flags() and SSL_CONF_CTX_clear_flags() returns the new flags value after setting or clearing flags.

Releases

6 releases since Debian 9 (Stretch); the text changed 5 times.

  1. 9
  2. 10
  3. 11
  4. 12
  5. 13
  6. Arch

History

These functions were added in OpenSSL 1.0.2.

From openssl 3.6.5-1 in Arch Linux 2026-11-01. Parsed by carta from the page's man source.